Answer:

Step-by-step explanation:
Given expression:

Remove parentheses:

Collect like terms:

Combine like terms:

Answer:
n=4
Step-by-step explanation:
Distribute the 8. and then subtract 8n from both sides and divide 40 and 10n.
What do you mean by find those numbers?
Answer:

Step-by-step explanation:
We are given that a variable force of magnitude F(x) moves a body along the x- axis from
to
.
The net work done by the force in moving the body from
to
.
=Velocity of the body at 
Velocity of the body at 
We know that
Work done=Final kinetic energy-Initial kinetic energy

K.E=

Hence, the net work done by the force is given by
